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650w PSU. Is it enough?

post #1 of 8
Thread Starter 
k so I used a cute little power supply calculator (found here: http://www.antec.outervision.com/PSUEngine) and it says that my recommended minimum PSU wattage is 600w. I have a Corsair 650TX.

Ok so I read that PSUs aren't efficient, so if my PSU says it's 650w, then I'm rly only getting 520 watts, and 520w < 600w. That made me wonder if this little power supply calculator takes that into account before it calculates my recommended minimum PSU wattage.

MEANWHILE, I've been gettin' a BUTLOAD of "Kernel-Power, Event 41, Task 63, Critical Errors" while playing Crysis.

My rig is in my sig. What's your verdict?
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sinep
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post #2 of 8
600W is overkill for your sig...and good quality PSU's can deliver their rated output, some excellent units can exceed that.
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post #3 of 8
Thread Starter 
Also yes, I put in specs a bit higher than my sig rig cause I'm gonna upgrade soon (new RAM, so higher vcore + base clock). PLUS, I put everything on 100% load in the calculator. How do we explain my BSODing?
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post #4 of 8
It's enough.
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post #5 of 8
Quote:
Originally Posted by jellis142 View Post
600W is overkill for your sig...and good quality PSU's can deliver their rated output, some excellent units can exceed that.
This, if a power supply is rated at xxx watts then thats its rated output what it draws from the wall will be higher than what it outputs because aprox 15-20 percent of the power will be released as heat when the AC current is converted to DC. Your power supply is overkill, my guess is that you have a slightly unstable OC somewhere.
    
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post #6 of 8
Tx650 should be able handle your rig.
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post #7 of 8
Thread Starter 
Quote:
Originally Posted by Klue22 View Post
This, if a power supply is rated at xxx watts then thats its rated output what it draws from the wall will be higher than what it outputs because aprox 15-20 percent of the power will be released as heat when the AC current is converted to DC. Your power supply is overkill, my guess is that you have a slightly unstable OC somewhere.
ty for the clarification. The instability may be from my RAM cause I've tried some real funky overclocks on it, only have 3GB at 1333MHz, so I use l >70% of it while running Crysis. I could try to run memtest86+ but I dunno how. I ran my rig for an hour w/ prime95 and it worked fine.

BUT Crysis is NASTY
Edited by cuad - 1/22/11 at 11:16pm
sinep
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post #8 of 8
Quote:
Originally Posted by cuad View Post
ty for the clarification. The instability may be from my RAM cause I've tried some real funky overclocks on it, only have 3GB at 1333MHz, so I use l >70% of it while running Crysis. I could try to run memtest86+ but I dunno how. I ran my rig for an hour w/ prime95 and it worked fine.

BUT Crysis is NASTY
An hour is definitely not enough for Prime95. Run with blend or customs settings (if you use custom, and I would, set it to use ~3200mb of RAM) and let it run 6-8 hours.

I'm betting it's your overclock.

Also, in the words of morbo: "PSU efficiency does not work that way!"
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Why upgrade?
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